fix(chat): yield the work status card to the context panel in project-less chats

The visibility hook looked the context panel up under the directory the
card reports about. A managed Chat reports about none, so the lookup ran
against an empty key and answered "closed" while the panel was open.

It now resolves the key the way the rail and the panel do, through
useEffectiveDirectory. The reporting directory is no longer an input to
this hook at all.

packages/ui/src/components/chat/ChatContainer.tsx

@@ -761,7 +761,6 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({
     // row that holds both columns, so its width never depends on the panel's
     // own visibility.
     const { rowRef: workStatusRowRef, visible: workStatusVisible, fits: workStatusFits } = useWorkStatusVisibility({
-        directory: workStatusDirectory,
         isMobile,
         isVSCode,
     });